Geocaching, derived from Greek γη "Earth" and English cache "secret camp", in German-speaking countries also called GPS scavenger hunt, is a kind of treasure hunt, which began to spread at the end of the 20th century. The hiding places ("Geocaches"), in German "Caches" for short, are published on the Internet on the basis of geographical coordinates and can then be searched with the help of a GPS receiver. With exact maps or via corresponding apps on the smartphone, the search is also possible without a GPS receiver.
A geocache is usually a waterproof container that contains a logbook as well as various small exchange items. The visitor can enter himself in a logbook to document his successful search. Then the geocache is hidden again at the place where it was found before. The find can be noted on the Internet on the corresponding page and supplemented with photos if necessary. In this way, other persons - especially the hider or owner ("owner") - can also follow the events surrounding the geocache. It is essential for the entire search and exchange process that the project is not recognized by other persons present and thus the geocache remains hidden from uninitiated persons. In the spring of 2019, there should already be around three million participants of the varied game (called "Cacher") in many countries of the world.
Yes, yes, that's the way it is, as soon as you have given up one thing, the next challenge comes. We "Käschen" now.
What is that? Roughly speaking, scavenger hunt on modern. GPS device or mobile phone, access to a "cache page", i.e. a list of schnitzels and patience when searching, everything you need.
Now just watch out for Muggles, i.e. ordinary people who don't know what geocaching is and who empty the "caches" out of curiosity, exuberance or pure malice, camouflage search activities and - if successful - announce the find on the Internet. The three girls are already searching, friends are infected, let's see.